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Finding the Fourth Proportional to 3,994.95, 5,992.43 and 3,989.18

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Solution

The fourth proportional to 3,994.95, 5,992.43 and 3,989.18 is: 5,983.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.95 : 5,992.43 = 3,989.18 : x
  2. Step 2: Convert to fraction form
    3,994.95/5,992.43 = 3,989.18/x
  3. Step 3: Cross multiply
    3,994.95x = 5,992.43 × 3,989.18
  4. Step 4: Simplify right side
    3,994.95x = 23,904,906.86
  5. Step 5: Solve for x
    x = 23,904,906.86/3,994.95
  6. Step 6: Final answer
    x = 5,983.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.